Anatomical features associated with venous congestion in DIEP flap using CT angiography with three-dimensional reconstruction

Abstract

Aim: Computed tomography angiography (CTA) using three-dimensional (3D) virtual reconstruction has been increasingly used in planning deep inferior epigastric artery perforator (DIEP) breast reconstruction. Although the most common complication associated with this surgery is diffuse venous congestion, its origin remains unclear. The aim of this study was to assess the anatomical characteristics of the anterior abdominal wall vessels that could predict venous congestion, using CTA with 3D virtual reconstruction.

Methods: A retrospective case-control study was conducted and a total of 169 DIEP flaps were reviewed. An abdominal CTA with 3D virtual reconstruction was analyzed with regard to anatomical features of the abdominal wall vessels. Seven venous congestive cases were identified. For each case, 3 controls that had not exhibited any vascular complications were randomly selected.

Results: The global venous congestion rate was 4.14%. No statistically significant differences were found between the groups’ superficial inferior epigastric vein (SIEV) diameter (P = 0.915), number of branches of SIEV (P = 0.371), number of perforators per flap (P = 0.255), flap subcutaneous tissue thickness (P = 0.652), direct communications between SIEV-perforators (P = 0.418), and communications of both SIEVs across the abdominal midline (P = 0.371).

Conclusion: The present study provided new information concerning the identification of the controversial anatomical features associated with venous congestion in DIEP flaps. CTA and 3D virtual reconstruction were useful tools for evaluating the abdominal wall anatomy and for planning DIEP breast surgery, but neither for predicting nor preventing the diffuse congestive phenomenon.

Keywords

Deep inferior epigastric artery perforator / flap / venous congestion / breast reconstruction / computed tomography angiography / preoperative imaging / virtual reality

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